Carbureter.



Patented Nov. 7, 1916.

. CLAUDEL.

CARBURETER.

APPLICATION FILED Nov. Io. 19I3.

Ely. 1

M nw, Qm. V.

CHARLES HENRI CLAUDEL, OF LEVALLOIS-PERRET, FRANCE..

CARBURETEB.

Laminaat.

Specification of Letters lPatent.

Patented Nov. 7, 119i@ Application led November 10, 1913. Serial No. 800,191.

To all/whom 'it may concern:

Be it known that I, CHARLES HENRI CLAUDEL, a citizen of the Republic of France, residing at 41 Rue des Arts, Levallois- Perret, Seine, France, have invented new and useful Improvements in Carb'ureters, of

which the following isa specification.

This invention relates to carbureters for internal combustlon engines.

One of the objects of the presentrinveny tion is to provide an improved form of carbureter and controlling mechanism therefor which shall be particularly efficient when changing from a no load to a running position and during acceleration. I

A further object of the invention is to provide means whereby a variation in the composition of the mixture suitable for a rapid acceleration may be obtainedV in response to rapid movements of the controlling mechanism from one position to the other.

A-still further object of the invention is to provide improved means for eifecting the operation of the valve mechanism for controlling the supply of air to the carbureter and the supply of combustible mixture issuing therefrom. y

-Another object is to provide improved means for by-passing combustible mixture around the main controlling mixture valve when the latter is in its closed position.

For the purpose of illustration but with no idea of limiting this invention to a particular form of device I vhave chosen an embodiment of the invention and have illustratcd the same in the drawings, in which- Figure 1 is a .view in sectional elevation of a well known form of carbureter with the invention applied thereto, Fig. 2 being an outside' view also in elevation of the carbureter illustrated in Fig. 1. Fig. 3 is a sectional plan view of the air valve illustrated 'in Figs. 1 and 2 and taken on the line III- III of Fig. 2, and Fig. 4 is a view similar to Fig. 1 showing an improved by-, pass arrangement for the combustible mixture when the main throttle valve is in its closed position.

f vReferring now to Figs. 1 to 3, the carbureter'isshown as comprising acylindrical body .portion 1 within the interior of which Vthe main controlling throttle. or mixture valve 2 islocated. The controlling valve 2 is shown as composed of a cylindrical member having a passage 3 passing therethrough,

the passage 3 conforming to the shape of the passages 4 and 4 constituting the upper and lower portions of the carbureter. The valve 2 controls the supply of air to the passage 3 surrounding the jet and constituting the carbureting or vaporizing chamber and also the supply r,of combustible mixture from this chamber to the portion 4 of the carbureter, through the ports 'a and b, that isto say the lower and upper openings of the passage 3 in the valve 2 as is now well known and as )vill be apparent from an inspection of Fig.

bureter isa rotary air valve 6 having a num-v ber of ports 6 coperatingwith a similar number of ports 5 formed in an outer sleeve or casing 5 surounding the rotary valve. The rotary valve 6 is provided with an outwardly extending arm or projection 7, the latter of which is engaged by a bifurcated member 8 by means of which the rotary valve 6 is adapted to be rotated. The rotation of the mixture valve 2 is effected by means of a lever 10 rigidly attached to the shaft 9 supporting the valve 2. One of the outer extremities of the shaft 9 is provided with a toothed member 11 coperating with a toothed sector 12 formed on or attached to the upwardly extending extremity1 of a two-armed lever pivotally mounted at 13..

The opposite end 14 of this lever is connected by means of a spring or springs 15 to the upper limb of a T-shaped member 16, the downwardly depending portion of which constitutes the operating member for the rotary air valx'e 6, one extremity of the upper portion of the member 16 being connected to a dash-pot or retarding device here lever 10 will be immediately transmitted to the valve 2 and the valve 2 will at all times assume a position corresponding to the .position of the lever 10. When theshaft 9 carrying the valve A2 is rotated, a corresponding movement of the lower extremity 14 of the double-armed lever will be obtained, the

upper extremity of this lever being moved in the direction indicated by the arrow f in Fig. 2 with the result that this motion will be transmittedthrough the spring 15 to the rotary air valve 6 and a corresponding movement of this valve 6 will eventually be effected. The movement of the valve 6 being retarded by the resistance offered to the movement of the T-shaped member 16 due to the actionof the dash-pot or retarding device 17, 18, it will be seen that the flow of air being-temporarily retarded a lower degree of pressure, will obtain within the passage 3 andi within the portion 4 of the carbureter with the result that a larger amount of petrol or other liquid will be withdrawn from the nozzle g which will compensate for the eii'ects due to the inertia of the liquid. When the action of the retarding device has been overcome the rotary valve 6 will be moved to its open position, that is to say, to a! position corresponding to the position in which the lever 10 has been set, and normal conditions will again obtain within the interior of the carbureter.

The retarding device may be arranged to retard the movement of the rotary valve 6 either when this valve is moved from thev closed to the open position or vice versa,

' the oppositeeil'ect to that hereinabove described being produced in thelatter case at the time of closure of the valve. If desired ythe rotary slide valve 6 may be arranged-to control the supply of hot air through cer- A. tain of its ports, cold air being supplied through the remaining ports, a passage 20 for example being provided through which hot air is supplied to the interior of the carbureter, the port 21 controlling the supply 0f h ot air passing through the passage 20 being open when the main controlling valve 2 is almost closed, the remaining p'orts for controlling the supply of cold air to the interior of the carbureter being so disposed that cold air is supplied to the carbureter only when the valve 2 is partly or entirely open. Under certainconditions the port21 may be arranged to remain open when the cold air ports are open, in addition to remaining open when the cold air ports are closed. It will be understood, however, that any suitable arrangement of the rotary valve 6 may be adopted and the control of air through this valve altered as desired to suit varying conditions.

In order to limit the movement of the member 16 limiting'stops 22, 23 may be pro'- vided coperating in conjunction with'a stop or projection 24 formed upon the downwardly projecting portion of the member 16. By this means the extent of opening and closing of the hot and cold air ports4 in per portion 4 of the carbureter. With this r arrangement the carbureted air impinges against the Wall of theupper portion of the carbureter with the result that the combustible mixture is often unequally distributed between the various cylinders. In the arlrangement illustrated in this ligure a passage 26 is provided for by-passing the mixture around the upper portion of the' valve 2, the passage 26- leading to a small pipe or nozzle 29 suitably attached to the interior of the carbureter. The rate of low of the mixture through the passage 28 may be controlled by an adjustable screw 27, a number of small holes 29 being provided in the nozzle 28, so that the mixture is fed to the middle of the conduit 4 Within the upper portion of' the carbureter insteadof issuing `from the mixing chamber in such a manner as Ato impinge against the wall of the carbureter. This by-` pass may be used in combination with a passage 25 of smaller dimensions than has hitherto been customary, or under certain conditions the passage 25 may be omitted if desired.

lt will be understood that the invention is not in any way limited to the particular construction and arrangement of the carbureter herein described andillustrated in the drawings, nor to the particular. form of mechanism by means of which the movement of the valve 2 is transmitted to the rotary valve 6 or to its equivalent, as the invention is in no way limited to the employment of any particular form of carbureter orcontrolling mechanism. Modifications in these and other respects may be made without exceeding the scope of the invention.

What I claim isz- 1. In acarbureter, the combination of a casing, a tubular mixture valve, a hydrocarbon nozzle: arranged to discharge into the chamber within said valve, an air valve .controlling the admission of air to the chamber within the mixture valve, means connecting the valves whereby movement of the mixture valve will be communicated to the. air valve, .and means for retarding` move. ment of the air valve without impeding movement of the mixture valve, for the p'urbut pose described. v

2. In a carbureter, the combination of a casing having a. plurality of air inlets in its -side wall, a conduit for heated air communieating with one of said air inlets, a fuel jet transversely of the casing, a valve within .the casing and rotatable about ran axis extending longitudinally thereof to control the admission of air, and connections-for effecting simultaneous actuation of said valves and permitting the air inletl valve to move in one direction at a lower speed than the main valve.

3. In a carbureter, the 4combination of a casing having suitable air and fuel inlets and a mixture outlet, avalve controlling the passage of combustible mixture from the casing, means providing a by-pass for combustible mixture about the mixture valve, and a nozzle extending into the casing from the outlet of said by-pass and provided with a plurality of discharge openings.

4:. In a carbureter, the combination of a casing, provided with suitable air and fuel inlets7 a valve controllingthe passage of combustible mixture to the outlet passage of the casing, the casing having formed therein a conduit constituting a by-pass for combustible mixture about the valve, and a nozf zle extending from said by-pass into the outlet passage of the casing todeliver the mixture at points relatively distant from the walls of said passage.

5. In a carbureter, the combination of a casing having suitable air inlet'and mixture outlet openings, a rotary tubular valve controlling the passage of combustible mixture to the mixture outlet, a fuel nozzle extending into the carbureting chamberor passage in said valve, and a mixture nozzle extending into the casing beyond said valve and communicating with the carbureting chamber or passage in said valve when the latter is in its closed position.

6. The combination in acarbureter of a v valve controlling the output of combustible valve governing the supply of combustible mixture to the outlet passage of the carbureter and also the amount of air suppliedv to the carbureting chamber, a rota-ry air valve operating in conjunction with the irstmentioned valve, a resilient connection between the two valves, a device operating to 'I retard the movement of the air valve, means for by-passing the explosive mixture around the mixture valve and delivering it within the interior of the outlet passage at a point distant from the walls of saidpassage, and means for regulating the flow of mixture through -said lay-pass connection.

7. The combination in a carbureter of a valve controlling the supply of combustible mixture supplied to the outlet passage, a fuel jet located within the interior of said valve, a rotary lair valve operating in conjunction with the first-mentioned valve,

means for transmitting the movement of the mixture valve to the air valve, means for retarding the movement of the air valve of combustible mixture by-passed around the said valve.

. 8. The combination in an internal combustion engine of a carbureter having av mixture valve and an air valve, a fuel jet located within the interior of the main valve, which constitutes a carbureting chamber, a rotary valve operating in conjunction with the mixture valve and controlling the amount of air supplied to the carbureting chamber, means for varying the condition of the air passing through the air valve, means for transmitting the movement of the mixture valve to the air valve, a resilient connection between the two valves, a dash-pot device for retarding the movement of the air valve and a by-pass connection for by-passing explosive mixture around the mixture valve.

9. The combination in an internal combustion engine of a carbureter having a valve controlling the supply of combustible mixture to the engine, a passage through said valve constituting the carbureting chamber, a fuel jet located within said passage, a valve controlling the supply of air to the interior of the carbureter, a resilient connection between the two valves, a device for retarding the movement of the air valve with respect to the mixture valve, an adjustable by-pass connection around the mixture'valve, and means for delivering the mixture by-passed around said valve to a point within the interior of the vcarbureter distant from the walls thereof.

10.' The combination in a carbureter of a s age, a second valve operatingin -con]unc tion with the rst-mentioned valve and con.

trolling the supply of air to the interior of the carbureter, a resilient connection between the twos valves, a device operating to `with respect to the mixture valve, means retard the movement' of one of the valves with respect to the other valve, a by-pass connection around the mixture valve permitting the passage of explosive mixture ,when v 11. The'coinbination in carbureter-*hof valve controlling-'the output of coI'nbustibleffV` mixture and having a passage therein* constituting the carbureting chambei-,ga fuel jet located within saidpassage, a rotary air valve having a number of ports and passages coperating with similar ports and passages formed Within a'sleeve surrounding said valve, means for delivering both cold and hot air to said ports and passages, a resilient connection between the two valves, means for retarding the movement of one of said valves with respect to the other, a by-pass connection around the mixture valve, an adjustable member-for varying the capacity of said by-pass connection, and means for delivering the mixture thus by passed to a point in the carbureter distant from the Walls thereof.

12. The combination in a carbureter,-of a casing having a plurality of air inlets silient connection, and means for retarding movement of the air valve in one direction, for the purpose described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES HENRI CLAUDEL.

Witnesses:

GEORGES PRoTrE, HANsoN C. CoxE. 

